The first of five M1 bridges to be demolished in six weeks was torn down on Saturday night. The Balfour Beatty/Skanska joint venture flattened Flamsteadbury overbridge between junction 8 (Hemel Hempstead) and junction 9 (Redbourn). The work is part of the Highways Agency's £298M M1 junction 6a to 10 widening scheme.
Seven bridges between junction 8 and junction 10 will be taken down by specialist demolition subcontractor Armac, using a progressive fragmentation technique. The second overbridge, Nicholls Farm, will be demolished overnight this Saturday, which means the M1 will be fully closed again between junction 8 and junction 9.